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authorsimon <simon@FreeBSD.org>2008-08-23 10:51:00 +0000
committersimon <simon@FreeBSD.org>2008-08-23 10:51:00 +0000
commit64fcbc70db16b1c94d818662746bb0e9c4fdb705 (patch)
tree596c39f00d5968b1519e8cd7f0546412b14c20f0 /crypto/openssl/ssl/t1_enc.c
parent8f21bfc1756ff75fb4caf97e5c9612a4d7106243 (diff)
downloadFreeBSD-src-64fcbc70db16b1c94d818662746bb0e9c4fdb705.zip
FreeBSD-src-64fcbc70db16b1c94d818662746bb0e9c4fdb705.tar.gz
Flatten OpenSSL vendor tree.
Diffstat (limited to 'crypto/openssl/ssl/t1_enc.c')
-rw-r--r--crypto/openssl/ssl/t1_enc.c840
1 files changed, 0 insertions, 840 deletions
diff --git a/crypto/openssl/ssl/t1_enc.c b/crypto/openssl/ssl/t1_enc.c
deleted file mode 100644
index 68448b9..0000000
--- a/crypto/openssl/ssl/t1_enc.c
+++ /dev/null
@@ -1,840 +0,0 @@
-/* ssl/t1_enc.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-#include "ssl_locl.h"
-#include <openssl/comp.h>
-#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/md5.h>
-
-static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
- int sec_len, unsigned char *seed, int seed_len,
- unsigned char *out, int olen)
- {
- int chunk,n;
- unsigned int j;
- HMAC_CTX ctx;
- HMAC_CTX ctx_tmp;
- unsigned char A1[EVP_MAX_MD_SIZE];
- unsigned int A1_len;
-
- chunk=EVP_MD_size(md);
-
- HMAC_CTX_init(&ctx);
- HMAC_CTX_init(&ctx_tmp);
- HMAC_Init_ex(&ctx,sec,sec_len,md, NULL);
- HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL);
- HMAC_Update(&ctx,seed,seed_len);
- HMAC_Final(&ctx,A1,&A1_len);
-
- n=0;
- for (;;)
- {
- HMAC_Init_ex(&ctx,NULL,0,NULL,NULL); /* re-init */
- HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL); /* re-init */
- HMAC_Update(&ctx,A1,A1_len);
- HMAC_Update(&ctx_tmp,A1,A1_len);
- HMAC_Update(&ctx,seed,seed_len);
-
- if (olen > chunk)
- {
- HMAC_Final(&ctx,out,&j);
- out+=j;
- olen-=j;
- HMAC_Final(&ctx_tmp,A1,&A1_len); /* calc the next A1 value */
- }
- else /* last one */
- {
- HMAC_Final(&ctx,A1,&A1_len);
- memcpy(out,A1,olen);
- break;
- }
- }
- HMAC_CTX_cleanup(&ctx);
- HMAC_CTX_cleanup(&ctx_tmp);
- OPENSSL_cleanse(A1,sizeof(A1));
- }
-
-static void tls1_PRF(const EVP_MD *md5, const EVP_MD *sha1,
- unsigned char *label, int label_len,
- const unsigned char *sec, int slen, unsigned char *out1,
- unsigned char *out2, int olen)
- {
- int len,i;
- const unsigned char *S1,*S2;
-
- len=slen/2;
- S1=sec;
- S2= &(sec[len]);
- len+=(slen&1); /* add for odd, make longer */
-
-
- tls1_P_hash(md5 ,S1,len,label,label_len,out1,olen);
- tls1_P_hash(sha1,S2,len,label,label_len,out2,olen);
-
- for (i=0; i<olen; i++)
- out1[i]^=out2[i];
- }
-
-static void tls1_generate_key_block(SSL *s, unsigned char *km,
- unsigned char *tmp, int num)
- {
- unsigned char *p;
- unsigned char buf[SSL3_RANDOM_SIZE*2+
- TLS_MD_MAX_CONST_SIZE];
- p=buf;
-
- memcpy(p,TLS_MD_KEY_EXPANSION_CONST,
- TLS_MD_KEY_EXPANSION_CONST_SIZE);
- p+=TLS_MD_KEY_EXPANSION_CONST_SIZE;
- memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
- memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
-
- tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),
- s->session->master_key,s->session->master_key_length,
- km,tmp,num);
-#ifdef KSSL_DEBUG
- printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
- s->session->master_key_length);
- {
- int i;
- for (i=0; i < s->session->master_key_length; i++)
- {
- printf("%02X", s->session->master_key[i]);
- }
- printf("\n"); }
-#endif /* KSSL_DEBUG */
- }
-
-int tls1_change_cipher_state(SSL *s, int which)
- {
- static const unsigned char empty[]="";
- unsigned char *p,*key_block,*mac_secret;
- unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+
- SSL3_RANDOM_SIZE*2];
- unsigned char tmp1[EVP_MAX_KEY_LENGTH];
- unsigned char tmp2[EVP_MAX_KEY_LENGTH];
- unsigned char iv1[EVP_MAX_IV_LENGTH*2];
- unsigned char iv2[EVP_MAX_IV_LENGTH*2];
- unsigned char *ms,*key,*iv,*er1,*er2;
- int client_write;
- EVP_CIPHER_CTX *dd;
- const EVP_CIPHER *c;
-#ifndef OPENSSL_NO_COMP
- const SSL_COMP *comp;
-#endif
- const EVP_MD *m;
- int is_export,n,i,j,k,exp_label_len,cl;
- int reuse_dd = 0;
-
- is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
- c=s->s3->tmp.new_sym_enc;
- m=s->s3->tmp.new_hash;
-#ifndef OPENSSL_NO_COMP
- comp=s->s3->tmp.new_compression;
-#endif
- key_block=s->s3->tmp.key_block;
-
-#ifdef KSSL_DEBUG
- printf("tls1_change_cipher_state(which= %d) w/\n", which);
- printf("\talg= %ld, comp= %p\n", s->s3->tmp.new_cipher->algorithms,
- comp);
- printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
- printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
- c->nid,c->block_size,c->key_len,c->iv_len);
- printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
- {
- int i;
- for (i=0; i<s->s3->tmp.key_block_length; i++)
- printf("%02x", key_block[i]); printf("\n");
- }
-#endif /* KSSL_DEBUG */
-
- if (which & SSL3_CC_READ)
- {
- if (s->enc_read_ctx != NULL)
- reuse_dd = 1;
- else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
- goto err;
- else
- /* make sure it's intialized in case we exit later with an error */
- EVP_CIPHER_CTX_init(s->enc_read_ctx);
- dd= s->enc_read_ctx;
- s->read_hash=m;
-#ifndef OPENSSL_NO_COMP
- if (s->expand != NULL)
- {
- COMP_CTX_free(s->expand);
- s->expand=NULL;
- }
- if (comp != NULL)
- {
- s->expand=COMP_CTX_new(comp->method);
- if (s->expand == NULL)
- {
- SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
- goto err2;
- }
- if (s->s3->rrec.comp == NULL)
- s->s3->rrec.comp=(unsigned char *)
- OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
- if (s->s3->rrec.comp == NULL)
- goto err;
- }
-#endif
- /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
- if (s->version != DTLS1_VERSION)
- memset(&(s->s3->read_sequence[0]),0,8);
- mac_secret= &(s->s3->read_mac_secret[0]);
- }
- else
- {
- if (s->enc_write_ctx != NULL)
- reuse_dd = 1;
- else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
- goto err;
- else
- /* make sure it's intialized in case we exit later with an error */
- EVP_CIPHER_CTX_init(s->enc_write_ctx);
- dd= s->enc_write_ctx;
- s->write_hash=m;
-#ifndef OPENSSL_NO_COMP
- if (s->compress != NULL)
- {
- COMP_CTX_free(s->compress);
- s->compress=NULL;
- }
- if (comp != NULL)
- {
- s->compress=COMP_CTX_new(comp->method);
- if (s->compress == NULL)
- {
- SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
- goto err2;
- }
- }
-#endif
- /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
- if (s->version != DTLS1_VERSION)
- memset(&(s->s3->write_sequence[0]),0,8);
- mac_secret= &(s->s3->write_mac_secret[0]);
- }
-
- if (reuse_dd)
- EVP_CIPHER_CTX_cleanup(dd);
-
- p=s->s3->tmp.key_block;
- i=EVP_MD_size(m);
- cl=EVP_CIPHER_key_length(c);
- j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
- cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
- /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
- k=EVP_CIPHER_iv_length(c);
- er1= &(s->s3->client_random[0]);
- er2= &(s->s3->server_random[0]);
- if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
- (which == SSL3_CHANGE_CIPHER_SERVER_READ))
- {
- ms= &(p[ 0]); n=i+i;
- key= &(p[ n]); n+=j+j;
- iv= &(p[ n]); n+=k+k;
- exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
- exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
- client_write=1;
- }
- else
- {
- n=i;
- ms= &(p[ n]); n+=i+j;
- key= &(p[ n]); n+=j+k;
- iv= &(p[ n]); n+=k;
- exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
- exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
- client_write=0;
- }
-
- if (n > s->s3->tmp.key_block_length)
- {
- SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
- goto err2;
- }
-
- memcpy(mac_secret,ms,i);
-#ifdef TLS_DEBUG
-printf("which = %04X\nmac key=",which);
-{ int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
-#endif
- if (is_export)
- {
- /* In here I set both the read and write key/iv to the
- * same value since only the correct one will be used :-).
- */
- p=buf;
- memcpy(p,exp_label,exp_label_len);
- p+=exp_label_len;
- memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
- memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
- tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),key,j,
- tmp1,tmp2,EVP_CIPHER_key_length(c));
- key=tmp1;
-
- if (k > 0)
- {
- p=buf;
- memcpy(p,TLS_MD_IV_BLOCK_CONST,
- TLS_MD_IV_BLOCK_CONST_SIZE);
- p+=TLS_MD_IV_BLOCK_CONST_SIZE;
- memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
- memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
- tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,p-buf,empty,0,
- iv1,iv2,k*2);
- if (client_write)
- iv=iv1;
- else
- iv= &(iv1[k]);
- }
- }
-
- s->session->key_arg_length=0;
-#ifdef KSSL_DEBUG
- {
- int i;
- printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
- printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
- printf("\n");
- printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
- printf("\n");
- }
-#endif /* KSSL_DEBUG */
-
- EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
-#ifdef TLS_DEBUG
-printf("which = %04X\nkey=",which);
-{ int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
-printf("\niv=");
-{ int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
-printf("\n");
-#endif
-
- OPENSSL_cleanse(tmp1,sizeof(tmp1));
- OPENSSL_cleanse(tmp2,sizeof(tmp1));
- OPENSSL_cleanse(iv1,sizeof(iv1));
- OPENSSL_cleanse(iv2,sizeof(iv2));
- return(1);
-err:
- SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
-err2:
- return(0);
- }
-
-int tls1_setup_key_block(SSL *s)
- {
- unsigned char *p1,*p2;
- const EVP_CIPHER *c;
- const EVP_MD *hash;
- int num;
- SSL_COMP *comp;
-
-#ifdef KSSL_DEBUG
- printf ("tls1_setup_key_block()\n");
-#endif /* KSSL_DEBUG */
-
- if (s->s3->tmp.key_block_length != 0)
- return(1);
-
- if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
- {
- SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
- return(0);
- }
-
- s->s3->tmp.new_sym_enc=c;
- s->s3->tmp.new_hash=hash;
-
- num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
- num*=2;
-
- ssl3_cleanup_key_block(s);
-
- if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
- goto err;
- if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
- goto err;
-
- s->s3->tmp.key_block_length=num;
- s->s3->tmp.key_block=p1;
-
-
-#ifdef TLS_DEBUG
-printf("client random\n");
-{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
-printf("server random\n");
-{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
-printf("pre-master\n");
-{ int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
-#endif
- tls1_generate_key_block(s,p1,p2,num);
- OPENSSL_cleanse(p2,num);
- OPENSSL_free(p2);
-#ifdef TLS_DEBUG
-printf("\nkey block\n");
-{ int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
-#endif
-
- if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
- {
- /* enable vulnerability countermeasure for CBC ciphers with
- * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
- */
- s->s3->need_empty_fragments = 1;
-
- if (s->session->cipher != NULL)
- {
- if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
- s->s3->need_empty_fragments = 0;
-
-#ifndef OPENSSL_NO_RC4
- if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
- s->s3->need_empty_fragments = 0;
-#endif
- }
- }
-
- return(1);
-err:
- SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
- return(0);
- }
-
-int tls1_enc(SSL *s, int send)
- {
- SSL3_RECORD *rec;
- EVP_CIPHER_CTX *ds;
- unsigned long l;
- int bs,i,ii,j,k,n=0;
- const EVP_CIPHER *enc;
-
- if (send)
- {
- if (s->write_hash != NULL)
- n=EVP_MD_size(s->write_hash);
- ds=s->enc_write_ctx;
- rec= &(s->s3->wrec);
- if (s->enc_write_ctx == NULL)
- enc=NULL;
- else
- enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
- }
- else
- {
- if (s->read_hash != NULL)
- n=EVP_MD_size(s->read_hash);
- ds=s->enc_read_ctx;
- rec= &(s->s3->rrec);
- if (s->enc_read_ctx == NULL)
- enc=NULL;
- else
- enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
- }
-
-#ifdef KSSL_DEBUG
- printf("tls1_enc(%d)\n", send);
-#endif /* KSSL_DEBUG */
-
- if ((s->session == NULL) || (ds == NULL) ||
- (enc == NULL))
- {
- memmove(rec->data,rec->input,rec->length);
- rec->input=rec->data;
- }
- else
- {
- l=rec->length;
- bs=EVP_CIPHER_block_size(ds->cipher);
-
- if ((bs != 1) && send)
- {
- i=bs-((int)l%bs);
-
- /* Add weird padding of upto 256 bytes */
-
- /* we need to add 'i' padding bytes of value j */
- j=i-1;
- if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
- {
- if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
- j++;
- }
- for (k=(int)l; k<(int)(l+i); k++)
- rec->input[k]=j;
- l+=i;
- rec->length+=i;
- }
-
-#ifdef KSSL_DEBUG
- {
- unsigned long ui;
- printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
- ds,rec->data,rec->input,l);
- printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
- ds->buf_len, ds->cipher->key_len,
- DES_KEY_SZ, DES_SCHEDULE_SZ,
- ds->cipher->iv_len);
- printf("\t\tIV: ");
- for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
- printf("\n");
- printf("\trec->input=");
- for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
- printf("\n");
- }
-#endif /* KSSL_DEBUG */
-
- if (!send)
- {
- if (l == 0 || l%bs != 0)
- {
- SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
- return 0;
- }
- }
-
- EVP_Cipher(ds,rec->data,rec->input,l);
-
-#ifdef KSSL_DEBUG
- {
- unsigned long i;
- printf("\trec->data=");
- for (i=0; i<l; i++)
- printf(" %02x", rec->data[i]); printf("\n");
- }
-#endif /* KSSL_DEBUG */
-
- if ((bs != 1) && !send)
- {
- ii=i=rec->data[l-1]; /* padding_length */
- i++;
- /* NB: if compression is in operation the first packet
- * may not be of even length so the padding bug check
- * cannot be performed. This bug workaround has been
- * around since SSLeay so hopefully it is either fixed
- * now or no buggy implementation supports compression
- * [steve]
- */
- if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
- && !s->expand)
- {
- /* First packet is even in size, so check */
- if ((memcmp(s->s3->read_sequence,
- "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
- s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
- if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
- i--;
- }
- /* TLS 1.0 does not bound the number of padding bytes by the block size.
- * All of them must have value 'padding_length'. */
- if (i > (int)rec->length)
- {
- /* Incorrect padding. SSLerr() and ssl3_alert are done
- * by caller: we don't want to reveal whether this is
- * a decryption error or a MAC verification failure
- * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
- return -1;
- }
- for (j=(int)(l-i); j<(int)l; j++)
- {
- if (rec->data[j] != ii)
- {
- /* Incorrect padding */
- return -1;
- }
- }
- rec->length-=i;
- }
- }
- return(1);
- }
-
-int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in_ctx, unsigned char *out)
- {
- unsigned int ret;
- EVP_MD_CTX ctx;
-
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy_ex(&ctx,in_ctx);
- EVP_DigestFinal_ex(&ctx,out,&ret);
- EVP_MD_CTX_cleanup(&ctx);
- return((int)ret);
- }
-
-int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
- const char *str, int slen, unsigned char *out)
- {
- unsigned int i;
- EVP_MD_CTX ctx;
- unsigned char buf[TLS_MD_MAX_CONST_SIZE+MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
- unsigned char *q,buf2[12];
-
- q=buf;
- memcpy(q,str,slen);
- q+=slen;
-
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy_ex(&ctx,in1_ctx);
- EVP_DigestFinal_ex(&ctx,q,&i);
- q+=i;
- EVP_MD_CTX_copy_ex(&ctx,in2_ctx);
- EVP_DigestFinal_ex(&ctx,q,&i);
- q+=i;
-
- tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
- s->session->master_key,s->session->master_key_length,
- out,buf2,sizeof buf2);
- EVP_MD_CTX_cleanup(&ctx);
-
- return sizeof buf2;
- }
-
-int tls1_mac(SSL *ssl, unsigned char *md, int send)
- {
- SSL3_RECORD *rec;
- unsigned char *mac_sec,*seq;
- const EVP_MD *hash;
- unsigned int md_size;
- int i;
- HMAC_CTX hmac;
- unsigned char buf[5];
-
- if (send)
- {
- rec= &(ssl->s3->wrec);
- mac_sec= &(ssl->s3->write_mac_secret[0]);
- seq= &(ssl->s3->write_sequence[0]);
- hash=ssl->write_hash;
- }
- else
- {
- rec= &(ssl->s3->rrec);
- mac_sec= &(ssl->s3->read_mac_secret[0]);
- seq= &(ssl->s3->read_sequence[0]);
- hash=ssl->read_hash;
- }
-
- md_size=EVP_MD_size(hash);
-
- buf[0]=rec->type;
- buf[1]=TLS1_VERSION_MAJOR;
- buf[2]=TLS1_VERSION_MINOR;
- buf[3]=rec->length>>8;
- buf[4]=rec->length&0xff;
-
- /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
- HMAC_CTX_init(&hmac);
- HMAC_Init_ex(&hmac,mac_sec,EVP_MD_size(hash),hash,NULL);
- HMAC_Update(&hmac,seq,8);
- HMAC_Update(&hmac,buf,5);
- HMAC_Update(&hmac,rec->input,rec->length);
- HMAC_Final(&hmac,md,&md_size);
- HMAC_CTX_cleanup(&hmac);
-
-#ifdef TLS_DEBUG
-printf("sec=");
-{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
-printf("seq=");
-{int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
-printf("buf=");
-{int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
-printf("rec=");
-{unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
-#endif
-
- if ( SSL_version(ssl) != DTLS1_VERSION)
- {
- for (i=7; i>=0; i--)
- {
- ++seq[i];
- if (seq[i] != 0) break;
- }
- }
-
-#ifdef TLS_DEBUG
-{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
-#endif
- return(md_size);
- }
-
-int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
- int len)
- {
- unsigned char buf[SSL3_RANDOM_SIZE*2+TLS_MD_MASTER_SECRET_CONST_SIZE];
- unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
-
-#ifdef KSSL_DEBUG
- printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
-#endif /* KSSL_DEBUG */
-
- /* Setup the stuff to munge */
- memcpy(buf,TLS_MD_MASTER_SECRET_CONST,
- TLS_MD_MASTER_SECRET_CONST_SIZE);
- memcpy(&(buf[TLS_MD_MASTER_SECRET_CONST_SIZE]),
- s->s3->client_random,SSL3_RANDOM_SIZE);
- memcpy(&(buf[SSL3_RANDOM_SIZE+TLS_MD_MASTER_SECRET_CONST_SIZE]),
- s->s3->server_random,SSL3_RANDOM_SIZE);
- tls1_PRF(s->ctx->md5,s->ctx->sha1,
- buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len,
- s->session->master_key,buff,sizeof buff);
-#ifdef KSSL_DEBUG
- printf ("tls1_generate_master_secret() complete\n");
-#endif /* KSSL_DEBUG */
- return(SSL3_MASTER_SECRET_SIZE);
- }
-
-int tls1_alert_code(int code)
- {
- switch (code)
- {
- case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
- case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
- case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
- case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
- case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
- case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
- case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
- case SSL_AD_NO_CERTIFICATE: return(-1);
- case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
- case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
- case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
- case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
- case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
- case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
- case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
- case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
- case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
- case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
- case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
- case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
- case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
- case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
- case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
- case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
- case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
- (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
- default: return(-1);
- }
- }
-
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